| c-heterochromatin and extra (b) chromosome distribution in six species of the nabis (heteroptera, nabidae) with the modal male karyotype 2n = 16 + xy. | the basic male karyotype of the six nabis species (heteroptera, nabidae) is confirmed as being 2n=16+xy. the chromosomes are holokinetic while male meiosis is achiasmatic. the sex chromosomes undergo postreduction and in second metaphase show distance pairing, registered in all nabid species examined so far. using c-banding technique for the first time in the family nabidae, the heterochromatin was revealed on chromosomes of six species. the species showed different amount and distribution of c- ... | 2003 | 14686643 |